Two wannabe ISIS terrorists had plans of beheading cops but failed miserably when a shootout lead to death for one terrorist. The video tape of what actually happened between the FBI, Boston Police, and the suspect is the key to keeping this case on the straight and narrow. This case is pretty much an open and shut one due to the great job by the Boston Police Department.

Usaama Rahim had been plotting for days, officials said. He bought three long-bladed fighting knives — “good for carving,” he said — and confided to his nephew and another man that he would travel to another state to commit a beheading.

But at 5 a.m. Tuesday, the plan abruptly changed, according to a federal affidavit. Rahim would murder police officers in Massachusetts.

“I’m just going to, ah, go after them, those boys in blue,” Rahim allegedly told his nephew David Wright, in a phone call recorded by an anti-terrorism task force.

Two hours later, when members of that task force approached him in a Roslindale parking lot, Rahim allegedly brandished one of his military knives. They told him to drop his weapon. “You drop yours,” he allegedly replied, before a Boston Police officer and an FBI agent shot him to death.

The details emerged as Wright, Rahim’s nephew and alleged conspirator, appeared in federal court on a charge that he obstructed the investigation by encouraging his uncle to destroy his cellphone to hide evidence.

The man shot when he approached the officer and FBI agent with a machete and refused to back down, officials said.

In a loud, clear voice, Wright told US Magistrate Judge M. Page Kelley that he understood the charges he faces and his rights, and that he did not need a court-appointed lawyer. He also told investigators “he agreed with Rahim’s plan and supported it,” according to a court affidavit.

A law enforcement official with knowledge of the investigation said additional terrorism charges may be brought against Wright.

Earlier Wednesday, Boston, federal, and Suffolk County law enforcement officials met with Muslim, Christian, and civil rights leaders to show them video surveillance of the encounter, which comes at a time of national concern about police shootings of black men.

The meeting and showing of the video also aimed to dispel an account on social media from Rahim’s brother, who is an imam, that Rahim had been shot in the back while talking to his father on a cellphone.

“What the video does reveal to us very clearly is that the individual was not on a cellphone. The individual was not shot in the back,” Darnell Williams, president of the Urban League of Eastern Massachusetts, said at a press conference following the viewing, which was closed to the media. “What we expected was transparency, and that transparency was given. We were very comfortable with what we saw.”

Muslim leaders, however, declared the video “inconclusive,” pointing out that it was grainy and distant, and that the officers and Rahim appeared only as silhouettes, without visible weapons.

“I don’t think he was shot in the back,” said Imam Abdullah Faaruuq, of the Roxbury-based Mosque for the Praising of Allah, who said he knows the Rahim family well. “However, we couldn’t see clearly at all whether he was brandishing a knife or not. . . . We cannot be clear as to what transpired.”

The surveillance footage shows Rahim crossing the parking lot of the shopping center on Washington Street, headed toward the sidewalk from the Dunkin’ Donuts at the back of the lot, said the Reverend Mark V. Scott, associate pastor at Azusa Christian Community in Dorchester, who viewed the footage.

As Rahim neared the sidewalk, walking casually, three task force members approached him. They did not appear to have their guns drawn, Scott said, and they were walking calmly.

They reached Rahim at the front of the parking lot near the sidewalk, and for a moment, Rahim was obscured from view because he was behind a bush, Scott said. But the officers suddenly began backing up quickly, crouching slightly, he said, and then Rahim can be seen advancing toward them. Two other task force members rushed over, Scott said, and then Rahim fell.

Rahim appeared to advance until he was shot, Scott said.

Read more: Boston Globe